The invention discloses an electromagnetic buoyancy wastewater draining pump. A water drawing shell and electromagnetic coils are installed in a floating body of the electromagnetic buoyancy wastewater draining pump, and a foot stand is fixed to one side of the lower face of the outer face of the floating body; the electromagnetic coils are fixed to the lower side of the outer face of the water drawing shell, and the lower end of the water drawing shell is fixed to the lower end of the interior of the floating body; and a shaft tube water outlet valve, a water inlet valve and an iron core piston are installed in the water drawing shell, the lower end of the shaft tube water outlet valve penetrates a center hole in one end of the upper face of the water drawing shell and then penetrates the iron core piston, and the water inlet valve is installed on an annular inner step at the inner end of a water inlet hole and matched with the transverse face of the annular inner step to be capable of sealing or opening a wastewater inlet channel. The electromagnetic buoyancy wastewater draining pump is compact in structure, simple in appearance and applicative, and floats on the wastewater surface when drawing wastewater, and convenience is brought to movable wastewater drawing work and movable wastewater draining work; silt and sludge at the wastewater bottom do not enter the water pump during wastewater drawing, and the water pump can automatically descend along with lowering of the wastewater level; and the electromagnetic buoyancy wastewater draining pump is suitable for draining wastewater of a wastewater pool and draining wastewater of a blocked wastewater ditch.